Ben 10, science or Fiction 3Chapter 3: StinkflyInsects are amongst the oldest creatures on the planet and can attain giant sizes in an oxygen rich environment. The slim is supposed to change depending on what plant pollens it contains. If this is true, is could be a slimier version of honey, shot out by pressure. For these creatures to be called "intelligent" I am doubtful, because insects on are our planet are void of intelligence. However, as one of my readers pointed out, the larger head allows for a larger brain, and thus, intelligence.
Ben 10, Science or Fiction 2Chapter 2: VulpimancersThis creature is not unlikely. It is very possible that the different vulpimancers we see are subspecies or are of different ages. Smell is slightly better than sight because without artificial scents, it can only be trumped by water. It is possible they are mutated from living on a garbage planet. It is possible they have tiny eyes and can see infrared. It is also possible his ears are hidden, like a dolphin's.
Ben 10 Fact or Fiction 1Chapter 1: HeatblastConsidering the bacteria on earth can evolve very quickly and survive in various environments that we would die in if we were exposed to the same elements and factors, I wouldn't be surprised if some bacteria in space on some rock of some kind or something developed a natural fire repellent to be able to live on the surface of a star to feed of the immense numbers of photons there. Such a creature would, over time be able to control the element in which it flourishes. These creatures also have super human strength by necessity, because the sun has 28 times earth's gravity on its surface, so anything living on the surface would need immense strength to move, but because of the gravity is greater, they would, on the surface of the star, have about the same strength as we do on earth.